Answer:
I believe it's A
Step-by-step explanation:
picture
Three students want to estimate the mean backpack weight of their schoolmates. To do this, they each randomly chose 8 schoolmates and weighed their backpacks. Then as per the given sample data,
(a) The sample means of the backpacks are: 6.375,6.375,6.625
(b) Range of sample means: 0.25
(c)The true statement is: The closer the range of the sample means is to 0, the less confident they can be in their estimate.
For the first sample, mean= 6.375
For the second sample, mean= 6.375
For the third sample, mean= 6.625
Range of sample means=Maximum Mean- Minimum Mean
= 6.625 - 6.375
= 0.25
The students will estimate the average backpack weight of their classmates using sample means, the true statement is:
The closer the range of the sample means is to 0, the more confident they can be in their estimate.
Learn more about range here:
brainly.com/question/24326172
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Answer:
$3.60, $21.60
Step-by-step explanation:
if 3/4 of 1grape = $2.70
Then
1grape = 2.70 ×4/3
1grape = $3.60
Therefore
6grapes = 3.60 × 6
= $21.60
Answer:
-25 and 2
Step-by-step explanation:
x + y = -23
xy = 50, so y = 50 /x
.
x + 50/x =-23, x^2 +23x - 50 = (x-2)(x+25)
so 2 and -25
The correct answer for this question is " y=x, x-axis, y=x, y-axis." The <span>set of reflections that would carry hexagon ABCDEF onto itself is that first, let y = x. Then it will be followed by the x-axis. Then do same thing as the first, y = x. Then do the y-axis part.</span>
